Merge branch 'kmap_atomic' of git://github.com/congwang/linux

Pull kmap_atomic cleanup from Cong Wang.

It's been in -next for a long time, and it gets rid of the (no longer
used) second argument to k[un]map_atomic().

Fix up a few trivial conflicts in various drivers, and do an "evil
merge" to catch some new uses that have come in since Cong's tree.

* 'kmap_atomic' of git://github.com/congwang/linux: (59 commits)
  feature-removal-schedule.txt: schedule the deprecated form of kmap_atomic() for removal
  highmem: kill all __kmap_atomic() [swarren@nvidia.com: highmem: Fix ARM build break due to __kmap_atomic rename]
  drbd: remove the second argument of k[un]map_atomic()
  zcache: remove the second argument of k[un]map_atomic()
  gma500: remove the second argument of k[un]map_atomic()
  dm: remove the second argument of k[un]map_atomic()
  tomoyo: remove the second argument of k[un]map_atomic()
  sunrpc: remove the second argument of k[un]map_atomic()
  rds: remove the second argument of k[un]map_atomic()
  net: remove the second argument of k[un]map_atomic()
  mm: remove the second argument of k[un]map_atomic()
  lib: remove the second argument of k[un]map_atomic()
  power: remove the second argument of k[un]map_atomic()
  kdb: remove the second argument of k[un]map_atomic()
  udf: remove the second argument of k[un]map_atomic()
  ubifs: remove the second argument of k[un]map_atomic()
  squashfs: remove the second argument of k[un]map_atomic()
  reiserfs: remove the second argument of k[un]map_atomic()
  ocfs2: remove the second argument of k[un]map_atomic()
  ntfs: remove the second argument of k[un]map_atomic()
  ...

2 files changed, 29 insertions, 30 deletions

diff --git a/drivers/staging/ramster/xvmalloc.c b/drivers/staging/ramster/xvmalloc.c
index 1f9c5082b6d5..93ba8e9407aa 100644
--- a/drivers/staging/ramster/xvmalloc.c
+++ b/drivers/staging/ramster/xvmalloc.c
@@ -56,17 +56,17 @@ static void clear_flag(struct block_header *block, enum blockflags flag)
  * This is called from xv_malloc/xv_free path, so it
  * needs to be fast.
  */
-static void *get_ptr_atomic(struct page *page, u16 offset, enum km_type type)
+static void *get_ptr_atomic(struct page *page, u16 offset)
 {
 	unsigned char *base;
 
-	base = kmap_atomic(page, type);
+	base = kmap_atomic(page);
 	return base + offset;
 }
 
-static void put_ptr_atomic(void *ptr, enum km_type type)
+static void put_ptr_atomic(void *ptr)
 {
-	kunmap_atomic(ptr, type);
+	kunmap_atomic(ptr);
 }
 
 static u32 get_blockprev(struct block_header *block)
@@ -202,10 +202,10 @@ static void insert_block(struct xv_pool *pool, struct page *page, u32 offset,
 
 	if (block->link.next_page) {
 		nextblock = get_ptr_atomic(block->link.next_page,
-					block->link.next_offset, KM_USER1);
+					block->link.next_offset);
 		nextblock->link.prev_page = page;
 		nextblock->link.prev_offset = offset;
-		put_ptr_atomic(nextblock, KM_USER1);
+		put_ptr_atomic(nextblock);
 		/* If there was a next page then the free bits are set. */
 		return;
 	}
@@ -225,18 +225,18 @@ static void remove_block(struct xv_pool *pool, struct page *page, u32 offset,
 
 	if (block->link.prev_page) {
 		tmpblock = get_ptr_atomic(block->link.prev_page,
-				block->link.prev_offset, KM_USER1);
+				block->link.prev_offset);
 		tmpblock->link.next_page = block->link.next_page;
 		tmpblock->link.next_offset = block->link.next_offset;
-		put_ptr_atomic(tmpblock, KM_USER1);
+		put_ptr_atomic(tmpblock);
 	}
 
 	if (block->link.next_page) {
 		tmpblock = get_ptr_atomic(block->link.next_page,
-				block->link.next_offset, KM_USER1);
+				block->link.next_offset);
 		tmpblock->link.prev_page = block->link.prev_page;
 		tmpblock->link.prev_offset = block->link.prev_offset;
-		put_ptr_atomic(tmpblock, KM_USER1);
+		put_ptr_atomic(tmpblock);
 	}
 
 	/* Is this block is at the head of the freelist? */
@@ -249,11 +249,10 @@ static void remove_block(struct xv_pool *pool, struct page *page, u32 offset,
 		if (pool->freelist[slindex].page) {
 			struct block_header *tmpblock;
 			tmpblock = get_ptr_atomic(pool->freelist[slindex].page,
-					pool->freelist[slindex].offset,
-					KM_USER1);
+					pool->freelist[slindex].offset);
 			tmpblock->link.prev_page = NULL;
 			tmpblock->link.prev_offset = 0;
-			put_ptr_atomic(tmpblock, KM_USER1);
+			put_ptr_atomic(tmpblock);
 		} else {
 			/* This freelist bucket is empty */
 			__clear_bit(slindex % BITS_PER_LONG,
@@ -284,7 +283,7 @@ static int grow_pool(struct xv_pool *pool, gfp_t flags)
 	stat_inc(&pool->total_pages);
 
 	spin_lock(&pool->lock);
-	block = get_ptr_atomic(page, 0, KM_USER0);
+	block = get_ptr_atomic(page, 0);
 
 	block->size = PAGE_SIZE - XV_ALIGN;
 	set_flag(block, BLOCK_FREE);
@@ -293,7 +292,7 @@ static int grow_pool(struct xv_pool *pool, gfp_t flags)
 
 	insert_block(pool, page, 0, block);
 
-	put_ptr_atomic(block, KM_USER0);
+	put_ptr_atomic(block);
 	spin_unlock(&pool->lock);
 
 	return 0;
@@ -375,7 +374,7 @@ int xv_malloc(struct xv_pool *pool, u32 size, struct page **page,
 		return -ENOMEM;
 	}
 
-	block = get_ptr_atomic(*page, *offset, KM_USER0);
+	block = get_ptr_atomic(*page, *offset);
 
 	remove_block(pool, *page, *offset, block, index);
 
@@ -405,7 +404,7 @@ int xv_malloc(struct xv_pool *pool, u32 size, struct page **page,
 	block->size = origsize;
 	clear_flag(block, BLOCK_FREE);
 
-	put_ptr_atomic(block, KM_USER0);
+	put_ptr_atomic(block);
 	spin_unlock(&pool->lock);
 
 	*offset += XV_ALIGN;
@@ -426,7 +425,7 @@ void xv_free(struct xv_pool *pool, struct page *page, u32 offset)
 
 	spin_lock(&pool->lock);
 
-	page_start = get_ptr_atomic(page, 0, KM_USER0);
+	page_start = get_ptr_atomic(page, 0);
 	block = (struct block_header *)((char *)page_start + offset);
 
 	/* Catch double free bugs */
@@ -468,7 +467,7 @@ void xv_free(struct xv_pool *pool, struct page *page, u32 offset)
 
 	/* No used objects in this page. Free it. */
 	if (block->size == PAGE_SIZE - XV_ALIGN) {
-		put_ptr_atomic(page_start, KM_USER0);
+		put_ptr_atomic(page_start);
 		spin_unlock(&pool->lock);
 
 		__free_page(page);
@@ -486,7 +485,7 @@ void xv_free(struct xv_pool *pool, struct page *page, u32 offset)
 		set_blockprev(tmpblock, offset);
 	}
 
-	put_ptr_atomic(page_start, KM_USER0);
+	put_ptr_atomic(page_start);
 	spin_unlock(&pool->lock);
 }
 EXPORT_SYMBOL_GPL(xv_free);
diff --git a/drivers/staging/ramster/zcache-main.c b/drivers/staging/ramster/zcache-main.c
index 36d53ed9d71a..68b2e053a0e6 100644
--- a/drivers/staging/ramster/zcache-main.c
+++ b/drivers/staging/ramster/zcache-main.c
@@ -496,13 +496,13 @@ static int zbud_decompress(struct page *page, struct zbud_hdr *zh)
 	}
 	ASSERT_SENTINEL(zh, ZBH);
 	BUG_ON(zh->size == 0 || zh->size > zbud_max_buddy_size());
-	to_va = kmap_atomic(page, KM_USER0);
+	to_va = kmap_atomic(page);
 	size = zh->size;
 	from_va = zbud_data(zh, size);
 	ret = lzo1x_decompress_safe(from_va, size, to_va, &out_len);
 	BUG_ON(ret != LZO_E_OK);
 	BUG_ON(out_len != PAGE_SIZE);
-	kunmap_atomic(to_va, KM_USER0);
+	kunmap_atomic(to_va);
 out:
 	spin_unlock(&zbpg->lock);
 	return ret;
@@ -1109,7 +1109,7 @@ static struct zv_hdr *zv_create(struct zcache_client *cli, uint32_t pool_id,
 		goto out;
 	atomic_inc(&zv_curr_dist_counts[chunks]);
 	atomic_inc(&zv_cumul_dist_counts[chunks]);
-	zv = kmap_atomic(page, KM_USER0) + offset;
+	zv = kmap_atomic(page) + offset;
 	zv->index = index;
 	zv->oid = *oid;
 	zv->pool_id = pool_id;
@@ -1123,7 +1123,7 @@ static struct zv_hdr *zv_create(struct zcache_client *cli, uint32_t pool_id,
 		spin_unlock(&zcache_rem_op_list_lock);
 	}
 	memcpy((char *)zv + sizeof(struct zv_hdr), cdata, clen);
-	kunmap_atomic(zv, KM_USER0);
+	kunmap_atomic(zv);
 out:
 	return zv;
 }
@@ -1145,7 +1145,7 @@ static struct zv_hdr *zv_alloc(struct tmem_pool *pool,
 			&page, &offset, ZCACHE_GFP_MASK);
 	if (unlikely(ret))
 		goto out;
-	zv = kmap_atomic(page, KM_USER0) + offset;
+	zv = kmap_atomic(page) + offset;
 	SET_SENTINEL(zv, ZVH);
 	INIT_LIST_HEAD(&zv->rem_op.list);
 	zv->client_id = LOCAL_CLIENT;
@@ -1153,7 +1153,7 @@ static struct zv_hdr *zv_alloc(struct tmem_pool *pool,
 	zv->index = index;
 	zv->oid = *oid;
 	zv->pool_id = pool->pool_id;
-	kunmap_atomic(zv, KM_USER0);
+	kunmap_atomic(zv);
 out:
 	return zv;
 }
@@ -1194,10 +1194,10 @@ static void zv_decompress(struct page *page, struct zv_hdr *zv)
 	ASSERT_SENTINEL(zv, ZVH);
 	size = xv_get_object_size(zv) - sizeof(*zv);
 	BUG_ON(size == 0);
-	to_va = kmap_atomic(page, KM_USER0);
+	to_va = kmap_atomic(page);
 	ret = lzo1x_decompress_safe((char *)zv + sizeof(*zv),
 					size, to_va, &clen);
-	kunmap_atomic(to_va, KM_USER0);
+	kunmap_atomic(to_va);
 	BUG_ON(ret != LZO_E_OK);
 	BUG_ON(clen != PAGE_SIZE);
 }
@@ -2203,12 +2203,12 @@ static int zcache_compress(struct page *from, void **out_va, size_t *out_len)
 	BUG_ON(!irqs_disabled());
 	if (unlikely(dmem == NULL || wmem == NULL))
 		goto out;  /* no buffer, so can't compress */
-	from_va = kmap_atomic(from, KM_USER0);
+	from_va = kmap_atomic(from);
 	mb();
 	ret = lzo1x_1_compress(from_va, PAGE_SIZE, dmem, out_len, wmem);
 	BUG_ON(ret != LZO_E_OK);
 	*out_va = dmem;
-	kunmap_atomic(from_va, KM_USER0);
+	kunmap_atomic(from_va);
 	ret = 1;
 out:
 	return ret;